Subtract 27/30 from 4/10
4/10 - 27/30 is -1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 10 × 3 = 30,
4/10 = 4 × 3/10 × 3 = 12/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
27/30 = 27 × 1/30 × 1 = 27/30 - Subtract the two like fractions:
12/30 - 27/30 = 12 - 27/30 = -15/30 - After reducing the fraction, the answer is -1/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/10-27/30 4/10-54/30 4/20-27/30 4/10-27/60 12/10-27/30 4/10-81/30 4/30-27/30 4/10-27/90 20/10-27/30 4/50-27/30 28/10-27/30 4/70-27/30